Data Set 13-7: A political scientist reported a study on attitudes toward increasing military expenditures. The attitudes of four groups were reported: US Army officers, corporate managers, public school teachers, and assembly-line workers. Within each of the categories, those under age 35 were tabulated separately from those over 35. A factorial ANOVA on the data produced a significant interaction; the main effect for age was not significant.
-Which of the following is a possible conclusion from Data Set 13-7?
A) the four occupations differ in attitudes toward military buildup
B) older participants favored increases while younger participants did not
C) the attitude toward buildup among the different occupations depends on the age of the person making the judgment
D) none of the other alternatives are correct.

Question

Quizplus · Accepted Answer

The significant interaction in the factorial ANOVA suggests that the effect of occupation on attitudes toward military buildup varies depending on the age of the participants, which is what option C describes.

Data Set 13-7: a Political Scientist Reported a Study on Attitudes